#!/usr/bin/perl
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# $TAHI: ct/nd.p2/v6LC_2_3_7.seq,v 1.5 2009/01/05 06:39:40 akisada Exp $
#
########################################################################

use redirect;

BEGIN {}
END   {}

if($V6evalTool::NutDef{'Type'} ne 'host') {
	exitHostOnly($Link0);
	#NOTREACHED
}

vCapture($Link0);

unless(commonSetup_1_1($Link0)) {
	exitInitFail($Link0);
	#NOTREACHED
}

$pktdesc{'local_redirect_tr1'} =
	'    Send Redirect w/ TLL, w/o Redirected Header: '.
	'TR1 (link-local) -> HUT (global)';

$pktdesc{'local_redirect_tr2'} =
	'    Send Redirect w/ TLL, w/o Redirected Header: '.
	'TR2 (link-local) -> HUT (global)';

unless(v6LC_2_3_7($Link0)) {
	exitFail($Link0);
	#NOTREACHED
}

exitPass($Link0);
#NOTREACHED



#
# perldoc
#
########################################################################
__END__

=head1 Title

  Test v6LC.2.3.7: Redirected Twice (Hosts Only)

=head1 Purpose

  Verify that a host properly processes valid Redirect messages twice for the same destination.

=head1 References

  * [ND]  Sections 8.3

=head1 Resource Requirements

  * Packet generator
  * Monitor to capture packets

=head1 Test Setup

  The following setup procedure is performed before each Part:

      a) Perform Common Setup 1.1.
      b) TR2 transmits an Echo Request to the HUT's link-local address. TR2 responds to any
      Neighbor Solicitations from the HUT with a Neighbor Advertisement with the solicited bit set to
      1 causing the HUT to update it's NCE for TR2 to sate REACHABLE.

  The Common Test Cleanup Procedure is performed after each part.

=head1 Procedure

   1. TR1 forwards an Echo Request from TN1 to the HUT. The Source Address is the off-link global
       address of TN1. The Destination Address is the global address of the HUT.
   2. Observe the packets transmitted by the HUT.
   3. TR1 transmits a Redirect message to the HUT. The ICMPv6 Destination Address is the global
       address of TN1. The Target Address is the link-local address of TR2.
   4. TR1 forwards an Echo Request from TN1 to the HUT. The Source Address is the off-link global
       address of TN1. The Destination Address is the global address of the HUT.
   5. Observe the packets transmitted by the HUT.
   6. TR2 transmits a Redirect message to the HUT. The ICMPv6 Destination Address is the global
       address of TN1. The Target Address is the link-local address of TR3.
   7. TR1 forwards an Echo Request from TN1 to the HUT. The Source Address is the off-link global
       address of TN1. The Destination Address is the global address of the HUT.
   8. Observe the packets transmitted by the HUT.

=head1 Observable Results

  Step 2:
  The HUT should respond to the Echo Request using TR1 as a first hop, as it is the only router
  in the HUT's Default Router List.

  Step 5:
  The HUT should respond to the Echo Request using TR2 as a first hop, indicating the HUT
  processed the Redirect message.

  Step 8:
  The HUT should respond to the Echo Request using TR3 as a first hop, indicating the HUT
  processed the Redirect message.

=head1 Possible Problems

  * None.

=cut